Space Simulator 2

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Boots Burnside

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Aug 3, 2024, 11:24:08 AM8/3/24

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SpaceEngine is a realistic virtual Universe you can explore on your computer. You can travel from star to star, from galaxy to galaxy, landing on any planet, moon, or asteroid with the ability to explore its alien landscape. You can alter the speed of time and observe any celestial phenomena you please. All transitions are completely seamless, and this virtual universe has a size of billions of light-years across and contains trillions upon trillions of planetary systems. The procedural generation is based on real scientific knowledge, so SpaceEngine depicts the universe the way it is thought to be by modern science. Real celestial objects are also present if you want to visit them, including the planets and moons of our Solar system, thousands of nearby stars with newly discovered exoplanets, and thousands of galaxies that are currently known.

Click on any visible object with the mouse and hit the 'G' key to fly directly to it. Search for objects by name, search by parameters within a certain radius, browse an interactive map of the surrounding space and view a map of the current planetary system

At the moment, we are no longer accepting donations via PayPal. If you want to support SpaceEngine beyond purchasing it for yourself, consider buying a copy for a friend or simply tell your friends and family about SpaceEngine and why you love it. No matter what you do, we deeply appreciate your support!

However, b'cos this is a Simulator, it is very important to size-it-well while you are building the Simulator. Once it is out-of-space on the root_volume (vol0), it may not be possible at times to even re-size it. Therefore, always size-it-well, and once you have a healthy working simulator, take a snapshot so that you can revert it if anything happens that may crash the Simulator. There is plenty of information on internet, netapp kb, documentation & forums discussing about this.

I have installed two instances of the ESX version of the 8.3 Simulator and within a few days I run into space problems on the root volume. See the messages below from the console. I have also runto into this same problem with instances installed in ESX in a Partner's lab. It appears that there are logs or some other file(s) that are continually being created and filling up the root volume. The Partner dug a little deeper and reports that it looks like the Simulator is buitl on a Linux image and that it is the Linux image that is actually having a space problem.

At this point, I cannot issue any meaningful commands to make this happen. Every command I issue seems to get thwarted due to databases being offline, like the VLDB. Can you give me some additional guidance on what commands to issue to accomplish your sugestion?

I think in that case, you will need to get into the systemshell as diag user and then go to /mroot/etc and remove the log directory recursively (rm -rf /mroot/etc/log). Once this is done do a df -h . on the /mroot directory and note the decreasing useage. Once it drops below 100%, then exit the shell and reboot. it should come back up and then add disk to the aggr and space to the volume vol0 as previously mentioned.

I have a similar issue with a strange twist. I also get the low space problem, however when I query the root aggregate size, it gives me 3.38GB available out of a total 4.17GB. Only 19% used, so strange why it's complaining about space when there seems to be loads free. I cleared all my snapshots and changed the snap sched vol0 0 0 0 etc a while ago when i added extra disks and expanded the space on aggr0 and i'm still gettig the same problem. All aggregates on my second node are showinga status 'unknown'.

Thanks for the quick reply. I added two disk but only expanded by 1g at the time as i thought it would be plenty considering that i disabled snapshot sched etc. Interestingly, just ran the command you suggested and get a response of 'Error: show failed: Database is not open'

Two students at the 364th Training Squadron's Cable and Antenna Systems apprentice hone career skills Feb. 23, 2024 at Sheppard Air Force Base. The apprentice course lasts 77 training days and includes both underground confined spaces and climbing 20-foot utility poles. (U.S. Air Force photo by Julie Svoboda)

Students at the 364th Training Squadron's Cable and Antenna Systems apprentice course use the confined space simulator Feb. 23, 2024 at Sheppard Air Force Base. The simulator was designed and built by instructor staff and students are encouraged to practice cable techniques to improve skills and build muscle memory. (U.S. Air Force Photo by Julie Svoboda)

Tech. Sgt. John Earl, Cable and Antenna Systems Instructor with the 364th Training Squadron, uses a confined space simulator to demonstrate cabling techniques Feb. 23, 2024 at Sheppard Air Force Base. The simulator was designed and built by instructor staff and students are encouraged to practice cable techniques to improve skills and build muscle memory. (U.S. Air Force photo by Julie Svoboda)

Students at the 364th Training Squadron cable and antenna systems apprentice course use a confined space simulator to practice cable techniques Feb. 23, 2024 at Sheppard Air Force Base. The simulator bridges classroom lectures and entering a maintenance hole and was built by instructors. (U.S. Air Force Photo by Julie Svoboda)

Two students at the 364th Training Squadron's Cable and Antenna Systems apprentice course use the confined space simulator Feb. 23, 2024 at Sheppard Air Force Base. The simulator was designed and built by instructor staff and students are encouraged to practice cable techniques to improve skills and build muscle memory. (U.S. Air Force photo by Julie Svoboda)

A student at the 364th Training Squadron's Cable and Antenna Systems apprentice course use the confined space simulator Feb. 23, 2024 at Sheppard Air Force Base. The simulator was designed and built by instructor staff and students are encouraged to practice cable techniques to improve skills and build muscle memory. (U.S. Air Force photo by Julie Svoboda)

According to Tech. Sgt. John Earl, Cable and Antenna Instructor, the simulator is a powerful teaching tool that appeals to students with a broad range of learning styles as instructors demonstrate the concepts introduced in lectures in a group setting that is impossible in a real maintenance hole, which can only accommodate a few people at a time. Students at the 364th Training Squadron cable and antenna systems apprentice course practice their trade Feb. 23, 2024 at Sheppard Air Force Base. The apprentice course lasts 77 academic days. (U.S. Air Force Photo by Julie Svoboda)

Students are encouraged to use the simulator to practice on their own, which provides the added benefit of learning to collaborate while building muscle memory for the job before they enter a confined space. This, according to Earl, improves the learning environment by decreasing the stress that can develop when a student is trying a new task in an unfamiliar environment.

The simulator was designed by Instructor Supervisor Joshua Rakes, who saw a similar mockup on a different base and decided to modify it to meet the training environment at Sheppard AFB. The confined space simulator is the first of many training advancements the instruction team hope to implement.

The Large Space Simulator is Europe's single largest vacuum chamber. It is a cylindrical container standing 15m high and 10m wide. The Simulator is used to test full-size spacecraft in representative space conditions.

The Simulator's high-performance pumps can achieve a vacuum a billion times lower than standard sea level atmosphere, while liquid nitrogen circulated around the Simulator approximates the cryogenic temperatures of space.

An array of powerful xenon lamps can reproduce the unfiltered sunlight encountered in Earth orbit, or turned up even higher to duplicate the energy intensity experienced closer to the Sun. Hardware can also be rotated in order to reproduce characteristic orbital motion as testing proceeds.

The Large Space Simulator's close simulation of in-orbit environmental conditions allow a broad range of tests to be carried out in support of design optimisation and verification of spacecraft and payloads.

Extreme temperatures can also cause expansion or contraction of spacecraft materials, defined by their 'coefficient of thermal expansion'. This can cause disruption to the satellite platform and subsystems, and induce micro-vibrations and even stress fractures.

'Thermal vacuum cycling' testing reproduces the rapid temperature shift caused as orbital spacecraft move in and out of sunlight. A scanning technique called 'photogrammetry' is used to obtain precision deformation measurements.

Its exceptional test volume makes it an excellent tool for testing large satellites and systems under conditions very close to those found in orbit. The Simulator has performed thermal and mechanical testing for many of ESA's largest missions including Envisat, XMM, ERA, Herschel and the Automated Transfer Vehicle (ATV).

Good day, I want to create something like Space Engine on Unreal Engine 4. I would like to keep the same physics as in space engine, and thanks to the unreal engine 4 graphics. What do you need? In Unreal Engine 4 you can create space on such a scale (every planet has to be modeled in real size). And last question, how to create physics for cosmic bodies? Usually unreal engine 4 grace operates to the floor, and I need every body had their gratu.

I would probably start with a top down space shooter or something like eve. You can build out your quadrants from a top down view. You will also start the process of physics. How the ship moves in space , acceleration etc. Than I would probably move towards in ship mobility. where the player can switch from cockpit view to walking in their ship. Then start start with FPS shooting. and than move towards docking and building space ports and than building planets and slowly move from there. Try to do the most minimum first. But finished game. If I had a good game designer, I could build a space similator easily.